Sheet-guide for printing-presses.



E. P. MURPHY. SHEH' GUIDE FOR PRINTING FRESSES. APPLICATION FILED JAN. 30, WW.

1,335 Patented m 29, 1918.

EDWARD P. MURPHY, OF ST. LOUIS, MISSOURI.

Specification of Letters Patent.

Patented Oct. 29, 1918.

Application filed. January 30, 1918. Serial N 0. 214,446.

To all whom it may concern:

Be it known that I, EDW RD P. MURPHY,

a citizen ofthe United States, and residentof St. Louis, Missouri, have invented certain new and useful Improvements in Sheet- Guides for Printing-Presses, of which the following is a specification.

This invention relates to improvements in a sheet guide for printing presses, and has for its object a guide constructed of a durable material such as thin metal or of any other material which will properly hold its shape and yet be of such nature as to per mit the same to be properly glued to or otherwise attached to the face of the tympan carried by the platen of the press. And when the guides are placed in proper position the card, sheet, or material to be printed can then be readily placed in its position during the printing process and brought in proper position with the type located in the chase.

The essential feature of my invention is to construct small and eflicient devices which can be used time and time again, thus dispensing with the making of a guide by placing strips of cardboard on the tympan as has been the custom in printing presses of the present day.

Figure 1, shows a perspective view of a platen showing the tympan supporter therein and on the same the relative position of my improved guides.

Fig. 2, is a vertical sectional view of the tympan with one of my guides in its proper position showing the manner of attachment.

Fig. 3, is a detail top plan view of my improved guide.

Fig. 4 is a perspective view of the same.

Fig. 5, is an inverted perspective view of the same.

In carrying out my invention I construct my device of a sheet of thin durable mate rial the same consisting of a body or plate portion 6, its one end being bent forming a shoulder or projection 7, the same being again bent forming a supporting lip 8, the same being shaped to form approximately a point or arrow head. Its forward end or nose 9 being slightly bent up so as to prevent the sheet of paper or card to be inserted thereunder from contacting with the end. In forming this guide the material is stamped out of a sheet of metal and suitably cut on the line indicated by the numeral 10, thereby forming a point or prong 11, which is in horizontal alinement with the body or plate portion 6, but projects beyond the shoulder 7, the rear end 12 of the plate is slightly bent so as to give a finger hold for removing the plate after a certain job of printing has been completed and when found necessary to re-adjust the guides for either a larger or smaller job of printing.

In Fig. 1, I show the position in which the guides are placed on the tympan and for proper clearness I show a frame 13, which is the platen of the usual printing press, and in the same is supported the tympan 14, which consists generally of a make-up of pads and sheets of paper to provide suitable resiliency during the printing process in order to get the proper impression on the article to be printed.

In inserting and placing the guides in position an imprint from the type in the chase is first made on the tympan, then the card or sheet to be printed is placed over the printed impression which has been taken on the tympan and a mark made with a pencil where it is found necessary to set the guides. When this is done the guides are then placed so that the shoulders are on the line made on the tympan and the prong 11 is inserted through the top layer or sheet of the tympan in the manner as illustrated in Fig. 2. The under surface of the plate is provided with glue or other adhesive material and the guides are then set and for example as that shown in Fig. 1, the card or sheet to be printed can then be readily and easily placed in position as that shown by dotted lines in Fig. 1, and by inserting the prong 11, beneath the sheet it forms a smooth inclined surface as that indicated by the numeral 15, (see Fig. 2,) over which the card or sheet will freely pass and contact with the inner surface of the shoulders 7. By means of the supporting lips which project over the card or sheet which is being printed the same will be prevented from tilting forward while the platen is moving forward to bring the sheet in contact with the type in the chase.

The device is simple but has utility and merit over the present system of forming and placing the guides. The present system of slitting small strips of card-board and pasting the same on the tympan has been found to be ofttimes unsatisfactory.

Having fully described my invention What I claim is:

A guide of the class described comprising a body of thin dln'able'lnaterial, the same being stamped forming a prong in alinement with the body portion, the material being bent at right angles forming a shoulder and again bent at right angles forming a supporting lip Which lip is approximately pointed at its end and slightly lip-turned, the rear end of the body portion being slightly up-turned to act as a finger grip for removin the guide from its set po- 15 sition, substantia ly as specified.

In testimony whereof, I have signed my name to this specification, in presence of two subscribing Witnesses.

EDWARD P. MURPHY. \Vitnesses:

WALTER G. STEIN, ALFRED A. EroKs.

Copies of thispatent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, 11.0. 

